On Thu, Oct 25, 2018 at 12:01:08PM -0700, Florian Fainelli wrote:

Some software such as perf makes unconditional use of the special
[vectors] page which is only provided when CONFIG_KUSER_HELPERS is
enabled in the kernel.

Facilitate the debugging of such situations by printing a debug message
to the kernel log showing the task name and the faulting address.

Hi Florian

Nice. I wish we had this a couple of months ago.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

Thanks
    Andrew